diff --git a/pkgs/tools/compression/bzip2/default.nix b/pkgs/tools/compression/bzip2/default.nix
index 144910ef3a4..b7a2717b85e 100644
--- a/pkgs/tools/compression/bzip2/default.nix
+++ b/pkgs/tools/compression/bzip2/default.nix
@@ -10,5 +10,5 @@ stdenv.mkDerivation {
   };
 
   sharedLibrary =
-    !stdenv.isDarwin && !(stdenv ? isDietLibC) && system != "i686-cygwin";
+    !stdenv.isDarwin && !(stdenv ? isDietLibC) && stdenv.system != "i686-cygwin";
 }